How much does it cost to rewire a 3-bedroom house in Sydney?

Rewiring a 3-bedroom house in Sydney typically costs between $6,000 and $9,000 depending on access, size, and switchboard upgrades.

Do I need to upgrade my switchboard when rewiring?

Yes, many older homes require switchboard upgrades to meet AS/NZS 3000 wiring rules and handle modern energy loads safely.

How Much Does It Cost to Rewire a House in Sydney?

piotechelectricals
Mar 27
2 min read

Updated: 3 hours ago

Rewiring a home is one of the most important electrical upgrades you can undertake - especially in older Sydney properties. Wondering how much it costs to rewire a house in Sydney? Whether you’re renovating, experiencing electrical issues, or need to meet current safety standards, knowing the cost of rewiring can help you budget confidently.

In this guide, we break down the key factors affecting rewiring costs in Sydney and answer the most common questions homeowners have.

Piotech Electrical rewiring a full house and switchboard — *Rewiring a full house and switchboard*

What Is House Rewiring?

House rewiring involves replacing old or unsafe electrical wiring throughout your home. It typically includes:

Removing outdated or degraded wiring
Installing new electrical cables and safety switches
Replacing power points, light switches, and fittings
Upgrading the switchboard if needed

Homes built before the 1980s may still have outdated wiring, such as rubber or cloth-insulated cables, which can be a serious fire hazard.

Average Cost to Rewire a House in Sydney

Property Size	Estimated Cost (AUD)
2-bedroom unit	$4,000 – $6,000
3-bedroom house	$6,000 – $9,000
4-bedroom house	$8,000 – $12,000
Large or double-storey	$12,000+

These are indicative estimates. Actual pricing depends on property access, materials, and whether the property is occupied.

What Affects the Cost of Rewiring?

1. Size and Layout of the Property

More rooms mean more wiring, fittings, and labour. Double-storey homes or homes with difficult roof access may cost more due to increased labour.

2. Accessibility

Occupied homes take longer to work in, as furniture must be moved and safety maintained throughout. Empty homes are easier and cheaper to rewire.

3. Switchboard Condition

If your switchboard is outdated (fuses instead of circuit breakers), you’ll likely need an upgrade, which adds around $800 to $2,500 depending on requirements.

4. Type of Wiring and Fixtures

Modern LED lighting, smart switches, dimmers, or USB power points may raise material costs but improve energy efficiency and functionality.

5. Compliance and Certification

In Sydney, all electrical work must comply with AS/NZS 3000 Wiring Rules. A licensed electrician will also provide a Certificate of Compliance Electrical Work (CCEW).

Do I Need to Rewire My Sydney Home?

Here are signs your home may need rewiring:

Lights flicker or dim without reason
Power points are warm or discoloured
Circuit breakers trip frequently
Burning smells or buzzing sounds
Your wiring is older than 30 years

If you’re unsure, book an electrical inspection with a licensed electrician.

Why Choose Piotech Electrical for Rewiring?

At Piotech Electrical, we specialise in residential rewiring across Sydney. Whether you’re upgrading your family home or renovating an investment property, we ensure your electrical system is:

Safe and compliant
Future-proofed for modern appliances
Neatly installed with minimal disruption

We’re Level 2 authorised service providers, meaning we can also handle switchboard upgrades, mains connections, and metering.

Ready to upgrade your home’s wiring?

Call 0415 902 388 or contact us online for a transparent quote and expert advice.

No callout fees. Obligation-free quotes. Servicing all areas of Sydney.